Priloader: Updating from 7.0 to 8.0 Beta?

Hi, I followed Soft modded any Wii guide and choose to install priloader 7.0 during the install, however I now want to update to 8.0 Beta due to my wife has ordered a Motion Plus controller for a particular game that requires the Motion Plus.

1. Can I just install the 8.0 beta over the already installed 7.0 ?
2. If after updating to 8.0 beta will the non motion plus controllers still work ?

Thank Yon Llaffer for the quick response. Glad to know I can leave as is and all will work fine. A wonderful forum with highly skilled individualizes. Thank you for all your hard work helping otherwise lost souls such as myself.